Measurement Computing Micro 488/EX rev.2.1 - Manual (Page 80)

Section 5 Command Descriptions
5.10
@@
Sending the system command @@ causes the Micro488/EX to return to power-on
conditions. Serial input (pending commands) and serial output (pending data) are
cleared, and any software programmable terminators are returned to the power-on
conditions. If a macro has been assigned as the STARTUP, it will execute immediately
upon command completion. Macro and log buffers are not effected by this command.
This is the only command which does not require a serial terminator to execute.
Reset is executed upon receipt of the second @.
When the @@ command is received, the serial handshake line (RTS) is un-
asserted. It is asserted when the Micro488/EX is capable of buffering commands. If
XON
/XOFF handshake is selected, the software handshake state is reset and an XON
character is transmitted when the Micro488/EX is capable of buffering commands.
The @ character, referred to as the 'ID' character, can be changed or disabled by
using the ID command. If it is anticipated that the ID character may be part of the
data
within an OUTPUT or SEND command, it should be disabled.
SYNTAX @@
RESPONSE None
MODE Any
BUS STATES: IFC,*IFC (SC)
EXAMPLE: PRINT #1,"@@"